Optimization of the Heap Leaching Process through Changes in Modes of Operation and Discrete Event Simulation
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AuthorToro Villarroel, Norman Rodrigo; Castillo, Jonathan; Hernández Avendaño, Pía Carolina Andrea; Navarra Lafontaine, Alessandro; Saldaña Pino, Manuel
Knowledge AreaExplotación de Minas
SponsorsThis research received no external funding.
Realizado en/conUniversidad Politécnica de Cartagena; Universidad Católica del Norte; Universidad de Atacama; Universidad de Antofagasta; Universidad McGill
Bibliographic CitationSaldaña M, Toro N, Castillo J, Hernández P, Navarra A. Optimization of the Heap Leaching Process through Changes in Modes of Operation and Discrete Event Simulation. Minerals. 2019; 9(7):421. https://doi.org/10.3390/min9070421
KeywordsProcess optimization process
Modes of operation
Discrete event simulation
The importance of mine planning is often underestimated. Nonetheless, it is essential in achieving high performance by identifying the potential value of mineral resources and providing an optimal, practical, and realistic strategy for extraction, which considers the greatest quantity of options, materials, and scenarios. Conventional mine planning is based on a mostly deterministic approach, ignoring part of the uncertainty presented in the input data, such as the mineralogical composition of the feed. This work develops a methodology to optimize the mineral recovery of the heap leaching phase by addressing the mineralogical variation of the feed, by alternating the mode of operation depending on the type of ore in the feed. The operational changes considered in the analysis include the leaching of oxide ores by adding only sulfuric acid (H2SO4) as reagent and adding chloride in the case of sulfide ores (secondary sulfides). The incorporation of uncertainty allows the creation of models ...
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